Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr2IrO4

被引：1031

作者：

Kim, B. J. ^{[1
,2
]}

Ohsumi, H. ^{[3
]}

Komesu, T. ^{[3
]}

Sakai, S. ^{[3
,4
]}

Morita, T. ^{[3
,5
]}

Takagi, H. ^{[1
,2
]}

Arima, T. ^{[3
,6
]}

机构：

[1] Univ Tokyo, Dept Adv Mat, Kashiwa, Chiba 2778561, Japan

[2] RIKEN, Adv Sci Inst, Magnet Mat Lab, Wako, Saitama 3510198, Japan

[3] RIKEN, SPring Ctr 8, Mikazuki, Hyogo 6795148, Japan

[4] Hiroshima Univ, Dept Phys Sci, Higashihiroshima 7398526, Japan

[5] Kwansei Gakuin Univ, Dept Phys, Sanda 6691337, Japan

[6] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

SCIENCE | 2009年 / 323卷 / 5919期

关键词：

D O I：

10.1126/science.1167106

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Measurement of the quantum-mechanical phase in quantum matter provides the most direct manifestation of the underlying abstract physics. We used resonant x-ray scattering to probe the relative phases of constituent atomic orbitals in an electronic wave function, which uncovers the unconventional Mott insulating state induced by relativistic spin-orbit coupling in the layered 5d transition metal oxide Sr2IrO4. A selection rule based on intra-atomic interference effects establishes a complex spin-orbital state represented by an effective total angular momentum = 1/2 quantum number, the phase of which can lead to a quantum topological state of matter.

引用

页码：1329 / 1332

页数：4

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